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English definition of “abrasion”

abrasion

noun uk   /əˈbreɪ.ʒən/ specialized us  
[U] geology, engineering the process of rubbing away the surface of something: There seems to have been some abrasion of the surface. [C] medical a place where the surface of something, such as skin, has been rubbed away: She had a small abrasion on her knee.
(Definition of abrasion from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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